Saw-jointer.



PATENTED APR. 17, 1906.

A. 0. REPPETO.

Y SAW JOINTER.

APPLICATION FILED AUG.15.'1904.

INVENTOR.

w/fi 0. Eg 0.83%.. BY Wm ATTORNEY.

& S S M n W AUGUSTUS O. REPPETO, OF BLAOHLY, OREGON.

SAW-\JOINTER.

Specification of Letters Patent.

Patented April 17, 1906.

Application filed August 15, 1904. Serial No. 220,694:-

To all whom it may concern:

Be it known that I, AUGUSTUS O. REP- PETO, a citizen of the UnitedStates, residing at Blachly, in the county of Lane and State of Oregon,have invented certain new and useful Improvements in Saw Jointers, ofwhich the following is a specification, reference being had therein tothe accompanying drawings.

This invention relates to that class ofdevices used for jointing orforming the cuttingteeth of a saw to uniform lengths either to astraight or curved line longitudinal of the saw and it consists in thenovel construction and combination of parts in a device which is adaptedto accomplish that end, as hereinafter fully described in connectionwith the accompanying drawings, in which Figure l is a plan view of adevice embodying my invention. Fig. 2 is a front elevation of the same,and Fig. 3 is a cross-section through x no of Figs. 1 and 2.

Heretofore it has been customary in j ointing saws to make use of files;but their use is attended with so many difliculties that the need for abetter tool has been long felt. The most important of these difficultiesreside in the fact that certain of the teeth after being filed down todesired heights are liable to be further lowered in trying to bring theadjoining group of teeth to correspond thereto, thus causing the pointsof the finished teeth to lie in an unfair or broken line. This isespecially true when jointing a saw that has been used for some time,when the teeth toward the mid-length of the blade are worn to a greaterextent than those near the extremities. These difficulties are overcomeby the use of my device, as with it the teeth are jointed individuallyand without affecting the remaining teeth.

In carrying my invention into practice I provide a frame or stockcomprising an upright shank 2, having in proximity to its upper andlower ends lateral arms 3 and 4, respectively. The lower of these armsare preferably curved, so as to present distended feet 4, which actingin conjunction with a protruding block 5 of the shank providebearing-surfaces in the same plane adapted to be pressed against thesaws being operated upon and hold the device firmly to its work, as mayconveniently be done by providing a handle 6 on the back of the shank.The outer ends of the arms 3 are given rectangular bends to furnishforwardly-protruding bracket-lugs 3; A lug 7 is positioned at the top ofsaid shank and protrudes toward the front, as shown. 8 is a thin andsmooth blade, preferably of hard steel, of somewhat greater width thanthe distance of the plane of said bearing-surfaces from the front faceof the shank. This blade is held in the frame between the under side ofthe lugs 3 and the points of adjustable clamping-screws 9 and 10,extending through screw-threaded apertures, respectively, provided inlug 7 and block 5, whereby the blade may be adjustably deflected toconform with the curve at which it is desired to joint the points of thesaw-teeth.

In use the device is placed against a saw held in a suitable vise orclamp, with the bearing-surfaces of the feet 4 and of the block 5against the saw-blade and the blade 8 upon the saw-teeth, when by a blowwith a hammer imparted upon the j ointing-blade and deliveredimmediately above a high tooth will cause the same to be driven down.Usually a single blow will suflice to effect the desired lowering of atooth. If not, the blow may be repeated until the tooth is at its properheight, and which can be readily determined by its touching the underside of the blade at the same time with the adjacent teeth previouslyjointed. It may be mentioned that after the teeth have been jointed orbrought down to a uniform height the saw-filer dresses down the teeth tocutting-points, as usual.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is-

1. The combination with a frame having forwardlyprotruding lugs, and anelastic jointing-blade, of means carried by the frame for clamping thesaid blade at its center, the ends of said blade extending under thesaid lugs of the frame and being free to move relatively thereto.

2. The combination with the frame having bent ends constitutingforwardly-protruding lugs, and the elastic blade, of the adjustableclamping-screws arranged one on each side of the blade.

3. The combination with a frame comprising a shank having at one endlaterally-extending arms terminating in bent ends and having at theother end additional laterallyextending arms, a block carried by saidshank and a lug carried by said shank and opposing said block, screwspassing through said lug and said block, of a flat, smooth, elasticblade secured between said screws and extending below said bent ends.

4. A frame comprising a shank having two sets of arms, one of said setsof arms having outwardly-bent ends, a block carried by said shank a lugcarried by the shank and screws passing, respectively, through saidblock and lug, substantially as and for the purposes described,

5. In a saw-jointing tool, the combination with a frame of substantiallyT shape, hav-

